DERIVATIVE FINANCIAL INSTRUMENTS - Schedule of Derivative Assets and Liabilities on a Gross Basis (Details) - Total derivatives not designated as hedging instruments - USD ($) $ in Millions	Feb. 28, 2021	May 31, 2020
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 10.4	$ 8.4
Derivative Liabilities	5.0	1.9
Commodity contracts \| Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	10.4	3.3
Commodity contracts \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1.5	1.9
Foreign exchange contracts \| Prepaid expenses and other current assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0.0	5.1
Foreign exchange contracts \| Other accrued liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 3.5	$ 0.0

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as an asset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5624163-113959

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- Definition

Fair value as of the balance sheet date of derivative instrument not designated as hedging instrument and classified as a liability.

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